If C={x: x∈N and x≤5}, what are the elements of C?
Answer and explanation
Correct answer: C={1,2,3,4,5}
Using the usual school convention, N denotes the natural numbers 1, 2, 3, and so on. Applying x≤5 selects 1, 2, 3, 4, and 5, with 5 included because the inequality is non-strict. Zero is excluded under this convention, and 6 or larger numbers fail the condition. Hence option B is correct.
Frequently asked questions
What is the correct answer to this question?
C={1,2,3,4,5}
Why is this the correct answer?
Using the usual school convention, N denotes the natural numbers 1, 2, 3, and so on. Applying x≤5 selects 1, 2, 3, 4, and 5, with 5 included because the inequality is non-strict. Zero is excluded under this convention, and 6 or larger numbers fail the condition. Hence option B is correct.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Common Questions.
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